canonical vs canon law

canonical is not a noun while canon law is a noun.

Word	Noun	Adjective	Verb	Adverb
canonical	No	Yes	No	No
canon law	Yes	No	No	No

canonical (noun)	canon law (noun)
	the body of codified laws governing the affairs of a Christian church

canonical (adjective)	canon law (adjective)
of or relating to or required by canon law
appearing in a biblical canon
conforming to orthodox or recognized rules
reduced to the simplest and most significant form possible without loss of generality